One verse

Srimad Bhagavatam 12.11.50

12.11.50

एवं ह्यनादिनिधनो भगवान् हरिरीश्वर: । कल्पे कल्पे स्वमात्मानं व्यूह्य लोकानवत्यज: ॥ ५० ॥

evaṁ hy anādi-nidhano bhagavān harir īśvaraḥ kalpe kalpe svam ātmānaṁ vyūhya lokān avaty ajaḥ

evam
thus
hi
indeed
anādi
without beginning
nidhanaḥ
or end
bhagavān
the Personality of Godhead
hariḥ
Lord Hari
īśvaraḥ
the supreme controller
kalpe kalpe
in each day of Brahmā
svam ātmānam
Himself
vyūhya
expanding into various forms
lokān
the worlds
avati
protects
ajaḥ
the unborn Lord

For the protection of all the worlds, the Supreme Personality of Godhead Hari, who is unborn and without beginning or end, thus expands Himself during each day of Brahmā into these specific categories of His personal representations.